The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 22, 2002
Filed:
Nov. 09, 1999
Shinichi Mizoguchi, Hyogo, JP;
Mitsubishi Denki Kabushiki Kaisha, Tokyo, JP;
Abstract
A voltage generating circuit according to the present invention includes an external power supply interconnection supplied with an external power supply voltage, an internal power supply interconnection to supply an internal power supply voltage to a load, a regulator circuit which receives the output of the external power supply interconnection and generates a rated voltage for the internal power supply voltage, a voltage switch transistor to connect the external power supply interconnection and the internal power supply interconnection. The regulator circuit and voltage switch transistor are complementarily activated based on the voltage level of a control node. The voltage generating circuit further includes a voltage switch circuit to switch the voltage level of the control node based on the voltage level of the external power supply interconnection.